From 0d5800a17bc0ed88094b5dc3e8190128f4f71446 Mon Sep 17 00:00:00 2001
From: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
Date: Fri, 10 Nov 2017 09:37:06 -0800
Subject: [PATCH] Address PR comments
---
src/harness/externalCompileRunner.ts | 62 +++++++++++++++++-----------
1 file changed, 39 insertions(+), 23 deletions(-)
diff --git a/src/harness/externalCompileRunner.ts b/src/harness/externalCompileRunner.ts
index ec8acf4872..5730c5c3c8 100644
--- a/src/harness/externalCompileRunner.ts
+++ b/src/harness/externalCompileRunner.ts
@@ -2,9 +2,16 @@
///
const fs = require("fs");
const path = require("path");
+
+interface ExecResult {
+ stdout: Buffer;
+ stderr: Buffer;
+ status: number;
+}
+
abstract class ExternalCompileRunnerBase extends RunnerBase {
abstract testDir: string;
- abstract report(result: any, cwd: string): string;
+ abstract report(result: ExecResult, cwd: string): string;
enumerateTestFiles() {
return Harness.IO.getDirectories(this.testDir);
}
@@ -24,8 +31,6 @@ abstract class ExternalCompileRunnerBase extends RunnerBase {
private runTest(directoryName: string) {
describe(directoryName, () => {
const cp = require("child_process");
- const path = require("path");
- const fs = require("fs");
it("should build successfully", () => {
const cwd = path.join(__dirname, "../../", this.testDir, directoryName);
@@ -51,7 +56,7 @@ class UserCodeRunner extends ExternalCompileRunnerBase {
kind(): TestRunnerKind {
return "user";
}
- report(result: any) {
+ report(result: ExecResult) {
// tslint:disable-next-line:no-null-keyword
return result.status === 0 && !result.stdout.length && !result.stderr.length ? null : `Exit Code: ${result.status}
Standard output:
@@ -69,9 +74,9 @@ class DefinitelyTypedRunner extends ExternalCompileRunnerBase {
kind(): TestRunnerKind {
return "dt";
}
- report(result: any, cwd: string) {
- const stdout = filterExpectedErrors(result.stdout.toString(), cwd)
- const stderr = result.stderr.toString()
+ report(result: ExecResult, cwd: string) {
+ const stdout = removeExpectedErrors(result.stdout.toString(), cwd);
+ const stderr = result.stderr.toString();
// tslint:disable-next-line:no-null-keyword
return !stdout.length && !stderr.length ? null : `Exit Code: ${result.status}
Standard output:
@@ -83,29 +88,40 @@ ${stderr.replace(/\r\n/g, "\n")}`;
}
}
-function filterExpectedErrors(errors: string, cwd: string): string {
- return breaks(errors.split("\n"), s => /^\w+/.test(s)).filter(isExpectedError(cwd)).map(lines => lines.join("\n")).join("\n");
+function removeExpectedErrors(errors: string, cwd: string): string {
+ return ts.flatten(splitBy(errors.split("\n"), s => /^\S+/.test(s)).filter(isUnexpectedError(cwd))).join("\n");
}
-function isExpectedError(cwd: string) {
+/**
+ * Returns true if the line that caused the error contains '$ExpectError',
+ * or if the line before that one contains '$ExpectError'.
+ * '$ExpectError' is a marker used in Definitely Typed tests,
+ * meaning that the error should not contribute toward our error baslines.
+ */
+function isUnexpectedError(cwd: string) {
return (error: string[]) => {
- if (error.length === 0) {
- return true;
- }
+ ts.Debug.assertGreaterThanOrEqual(error.length, 1);
const match = error[0].match(/(.+\.ts)\((\d+),\d+\): error TS/);
if (!match) {
return true;
}
- const errlines = fs.readFileSync(path.join(cwd, match[1]), { encoding: "utf8" }).split("\n");
- const index = parseInt(match[2]);
- const errline = index < errlines.length ? errlines[index] : "";
- const prevline = index - 1 < errlines.length && index > 0 ? errlines[index - 1] : "";
- if (errline.indexOf("$ExpectError") > -1 || prevline.indexOf("$ExpectError") > -1) {
- return false;
- }
- return true;
- }
+ const [, errorFile, lineNumberString] = match;
+ const lines = fs.readFileSync(path.join(cwd, errorFile), { encoding: "utf8" }).split("\n");
+ const lineNumber = parseInt(lineNumberString);
+ ts.Debug.assertGreaterThanOrEqual(lineNumber, 0);
+ ts.Debug.assertLessThan(lineNumber, lines.length);
+ const previousLine = lineNumber - 1 > 0 ? lines[lineNumber - 1] : "";
+ return lines[lineNumber].indexOf("$ExpectError") === -1 && previousLine.indexOf("$ExpectError") === -1;
+ };
}
-function breaks(xs: T[], isStart: (T: any) => boolean): T[][] {
+/**
+ * Split an array into multiple arrays whenever `isStart` returns true.
+ * @example
+ * splitBy([1,2,3,4,5,6], isOdd)
+ * ==> [[1, 2], [3, 4], [5, 6]]
+ * where
+ * const isOdd = n => !!(n % 2)
+ */
+function splitBy(xs: T[], isStart: (x: T) => boolean): T[][] {
const result = [];
let group: T[] = [];
for (const x of xs) {